/// <inheritdoc />
protected override bool UpdatePlatform()
{
// Shift keys on windows tend to "stick"
// When one key is held, the other doesn't receive down events, and an up event
// is sent only to the latter one. To work around this manually query the status of both shift keys every tick.
if (IsFocused)
{
KeyState lShift = User32.GetAsyncKeyState(VirtualKey.LSHIFT);
UpdateKeyStatus(Key.LeftShift, lShift.IsPressed);
KeyState rShift = User32.GetAsyncKeyState(VirtualKey.RSHIFT);
UpdateKeyStatus(Key.RightShift, rShift.IsPressed);
}
while (User32.PeekMessage(out Message msg, IntPtr.Zero, 0, 0, PeekMessageFlags.PM_REMOVE))
{
// Generated by task manager and stuff like that.
// The WM_QUIT message is not associated with a window and therefore will never be received through a window's window procedure.
if (msg.Value == WM.QUIT)
{
IsOpen = false;
return(false);
}
User32.TranslateMessage(ref msg);
User32.DispatchMessage(ref msg);
}
if (HostPaused)
{
User32.WaitMessage();
}
return(true);
}
private void CreateHelperWindow()
{
HelperWindowHandle = User32.CreateWindowEx(
WindowExStyles.WS_EX_OVERLAPPEDWINDOW,
CLASS_NAME,
"Emotion Helper Window",
WindowStyles.WS_CLIPSIBLINGS | WindowStyles.WS_CLIPCHILDREN,
0, 0, 100, 100,
IntPtr.Zero, IntPtr.Zero,
Kernel32.GetModuleHandle(null),
IntPtr.Zero
);
if (HelperWindowHandle == IntPtr.Zero)
{
CheckError("Win32: Failed to create helper window.", true);
}
// HACK: The command to the first ShowWindow call is ignored if the parent
// process passed along a STARTUPINFO, so clear that with a no-op call
User32.ShowWindow(HelperWindowHandle, ShowWindowCommands.SW_HIDE);
// Register for HID device notifications
var dbi = new DevBroadcastDeviceInterfaceW();
dbi.DbccSize = (uint)Marshal.SizeOf(dbi);
dbi.DbccDeviceType = DeviceType.DeviceInterface;
dbi.DbccClassGuid = User32Guids.GuidDevInterfaceHid;
_deviceNotificationHandle = User32.RegisterDeviceNotificationW(HelperWindowHandle, ref dbi, DeviceNotificationFlags.WindowHandle);
CheckError("Registering for device notifications.");
while (User32.PeekMessage(out Message msg, HelperWindowHandle, 0, 0, PeekMessageFlags.PM_REMOVE))
{
User32.TranslateMessage(ref msg);
User32.DispatchMessage(ref msg);
}
Kernel32.SetLastError(0);
CheckError("Creating helper window.");
}
/// <inheritdoc />
protected override bool UpdatePlatform()
{
// Update input.
// NOTE: Shift keys on Windows tend to "stick" when both are pressed as
// no key up message is generated by the first key release
// The other half of this is in the handling of WM_KEYUP
// HACK: Query actual key state and synthesize release events as needed
KeyState lShift = User32.GetAsyncKeyState(VirtualKey.LSHIFT);
KeyState rShift = User32.GetAsyncKeyState(VirtualKey.RSHIFT);
// Check if it was down, but no longer is.
if (_keys[(short)Key.LeftShift] && lShift.Value != 0)
{
UpdateKeyStatus(Key.LeftShift, false);
}
if (_keys[(short)Key.RightShift] && rShift.Value != 0)
{
UpdateKeyStatus(Key.RightShift, false);
}
while (User32.PeekMessage(out Message msg, IntPtr.Zero, 0, 0, PeekMessageFlags.PM_REMOVE))
{
// Things like the task manager will generate this message.
if (msg.Value == WM.QUIT)
{
IsOpen = false;
return(false);
}
User32.TranslateMessage(ref msg);
User32.DispatchMessage(ref msg);
}
// Check if focused.
if (!IsFocused && !Engine.Configuration.DebugMode)
{
User32.WaitMessage();
}
return(true);
}
